Alert archive / South Carolina / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 117, NWS Columbia, SC

July 22, 2000Sumter County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Jul 22, 2000, 4:01 PM EDT for Sumter County, South Carolina. It was in force for 44 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 22, 2000, 4:01 PM EDT (20:01 UTC)
Expired: Jul 22, 2000, 4:45 PM EDT
In force: 44 min
Issued by: NWS Columbia, SC
Area: Whole counties

County Sumter County, SC

What was reported inside it

Time	Report	Where	Remark
Jul 22, 4:30 PM EDT	Thunderstorm Wind 50 E	Sumter, SC	Sheriff reported trees and powerlines down in and around Sumter.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 22, 1:15 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.0 hours before the alert went out and 118 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2668 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 983 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

658 
WUUS52 KCAE 222001
SVRCAE
SCC085-222045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
401 PM EDT SAT JUL 22 2000

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SUMTER COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 445 PM EDT.

* AT 353 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER CHERRYVALE...OR ABOUT 5 MILES WEST OF
  SUMTER...MOVING NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  EAST SUMTER...MULBERRY AT 415 PM EDT

THIS IS A DANGEROUS STORM WITH DAMAGING WINDS AND LARGE HAIL. STAY
INDOORS AWAY FROM WINDOWS.

REPORT ANY HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY SHERIFF
OR TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN COLUMBIA.

AWP

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Columbia, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 22, 3:40 PM EDT, 21 minutes earlier.

Area forecast discussion, Jul 22, 3:40 PM EDT, 21 minutes before

SCZ015-016-018-020>022-025>031-035>038-041-GAZ040-063>065-077-230724-

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE COLUMBIA, SC
340 PM EDT SAT JUL 22 2000

UPPER TROUGH TO AMPLIFY OVER THE EASTERN US WITH SOUTHWEST FLOW
CONTINUING ACROSS OUR AREA. SHORTWAVES CONTINUING TO CROSS THE STATE
TONIGHT THROUGH MONDAY. FRONTAL SYSTEM TO REMAIN OVER THE STATE WITH
AREA OF LOW PRESSURE MOVING ALONG THE FRONT. AIRMASS REMAINS
UNSTABLE. POSITION OF UPPER LEVEL JET KEEP UVV ACROSS THE STATE.
GUIDANCE TEMPS LOOK REASONABLE WITH HIGHS SLIGHTLY BELOW NORMALS
WITH PLENTY OF CLOUD COVER. LOWS IN THE UPPER 60S AND LOWER 70S.
WILL GO CLOSE TO GUIDANCE POPS...GENERALLY FROM 40 TO 60 PERCENT.

FCSTID = 10
CAE   73  88  71  86 /  40  50  50  50
AGS   70  90  70  88 /  40  50  50  50
SSC   73  88  71  87 /  40  50  50  50
OGB   73  88  72  87 /  40  50  50  50

.CAE...
GA...NONE.
SC...NONE.

LM

In the hours before

Local storm report, Jul 22, 2:44 PM EDT, 1 hour 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA, SC
244 PM EDT SAT JUL 22 2000

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

200 PM     HIWAY 34 NEAR POMARIA     SC   WIND DAMAGE
07/22/00   NEWBERRY                       TREES DOWN NEAR POMARIA.
                                          FROM NEWBERRY COUNTY
                                          SHERIFF OFFICE.

BLP

Local storm report, Jul 22, 2:48 PM EDT, 1 hour 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA, SC
248 PM EDT SAT JUL 22 2000

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

215 PM     WESTERN FAIRFIELD COUNTY  SC   .75 INCH HAIL
07/22/00   FAIRFIELD                      DIME SIZE HAIL THROUGHOUT
                                          WESTERN FAIRFIELD COUNTY.
                                          FROM FAIRFIELD COUNTY
                                          SHERIFF.

BLP

Local storm report, Jul 22, 3:43 PM EDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA, SC
343 PM EDT SAT JUL 22 2000

TIME(EDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

320 PM     US 1 AT MCBEE             SC   58 MPH
07/22/00   CHESTERFIELD                   SKYWARN SPOTTER REPORTED
                                          WINDS BENDING FLAGPOLE TO
                                          ABOUT 60 MPH

BLP

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 22, 1:00 PM EDT	Severe Thunderstorm Warning	CAE	Newberry	30 min
Jul 22, 1:29 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield, Newberry	46 min
Jul 22, 1:47 PM EDT	Tornado Warning	CAE	Fairfield	43 min
Jul 22, 2:35 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lancaster	40 min
Jul 22, 3:13 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw	47 min
Jul 22, 3:19 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield	41 min
Jul 22, 3:30 PM EDT	Severe Thunderstorm Warning	CAE	Lee	30 min
Jul 22, 3:58 PM EDT	Severe Thunderstorm Warning	CAE	Lee	32 min
Jul 22, 6:50 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield	40 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2000 Every severe thunderstorm warning in 2000

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.